back flow roll 背辊 ; 小挤水辊
back-flow preventer 防回流装置
filtrate passive back flow 原尿回漏
back flow condenser 回龄凝器
downhole back flow valve 井下回流阀
back flow stand 退纸架
Under the standard work condition, the double-volute can more remove radial force, can also more and very convert the kinetic energy of liquid as pressure ability, make the volute inner liquid flow be getting more even, reduce the water power loss. Have no back flow phenomenon in nose.
通过对单蜗壳与双蜗壳内部流动的数值计算,得出了以下重要结论:1、在标准工况下,单、双蜗壳都可以较好地消除径向力,也能够较好第把液体的动能转化为压力能,使蜗壳内部液体流动更加均匀,减小水力损失,在隔舌处基本没有回流现象。
参考来源 - 双蜗壳的参数计算绘形和内流场计算·2,447,543篇论文数据，部分数据来源于NoteExpress
Lack of engineering control to arrest accidental back-flow (Design).
防止意外回流缺乏工程控制(设计)。
The change of back-flow pressure, deformed exhaust hole, pre-inflow structure and so on can be adopted to reduce back-flow impact.
根据回流压力的变化规律，采取异型排气口、预进气结构等措施减小回流冲击。
Blocking checkpoints occur if we don't process the things efficiently on secondary, and the problem in secondary will back-flow and impact primary (blocks primary).
如果我们不能有效处理次要服务器上的工作，那么次要服务器上的问题会反过来影响主要服务器(阻塞主要服务器)，于是就会出现阻塞检查点的情况。
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